A lunchtime jogger accidentally collides with a young male pedestrian in a narrow City of London street. In a narrow part of a street called Wallbrook (the route of the ancient River Wallbrook that still flows underground here) office workers and those exercising enter a pinch-point where construction works narrow the pavement width. Running through here is inevitably going to force people to have their personal space compromised. The collision is brief and good natured as sorrys and excuse mes are uttered.